| 摘要 |
PROBLEM TO BE SOLVED: To provide an amplifier circuit that maintains an output power as much as possible while preventing clipping of output signals. SOLUTION: The amplifier circuit includes: an amplification section (50) for amplifying a first signal to generate a second signal (Vo), and a characteristic correction section (20) for generating the first signal by performing or without performing frequency characteristic processing to all or a part of input signals (Vg) based on a state variable (VxTyp) that varies according to the state of the amplification section. In the figure, the characteristic correction section generates Vx=Vg, Vx=Vg', or Vx=G1×Vg'+ G2×Vg(0<G1<1, 0<G2<1) according to a relation between VxMAX obtained by adding a fixed value VSC to the VxTyp, and VIMAX. COPYRIGHT: (C)2011,JPO&INPIT
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